3.
Has a problem been found?
YES
a.
Repair as necessary and go to "Verification of Vehicle Repair" procedure .
NO
a.
Go to " Power Circuit Inspection " procedure.
Many malfunctions in the electrical system are caused by poor harness and terminals. Faults can also be caused by interference from other electrical systems, and mechanical or chemical damage.
Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage.
Has a problem been found?
YES
Repair as necessary and go to "Verification of Vehicle Repair" procedure .
NO
Go to " Power Circuit Inspection " procedure.
Ignition "OFF"
Disconnect SMARTRA connector
Ignition "ON" & Engine "OFF"
Measure voltage between terminal 4 of the SMARTRA harness connector and chassis ground
Specification : B+
Is the measured voltage within specifications ?
YES
Go to "Signal Circuit Inspection" procedure
NO
Check open or short in power harness
Check that sensor fuse 10A located between Control relay and Smartra is open or blown off
Repair as necessary and go to "Verification of Vehicle Repair" procedure.
Ignition "OFF"
Disconnect SMARTRA connector
Ignition "ON" & Engine "OFF"
Measure voltage between terminal 5 of the SMARTRA harness connector and chassis ground.
Specification : Approx. 6.0V
Is the measured voltage within specifications ?
YES
Go to "Check for open in harness" as below
NO
Check short in signal harness
Repair as necessary and go to "Verification of Vehicle Repair" procedure.
Ignition "OFF"
Disconnect SMARTRA connector
Measure resistance between terminal 5 of the SMARTRA harness connector and terminal 52 of PCM harness connector
Specification : Approx. below 1Ω
Is the measured resistance within specifications ?
YES
Go to "Ground Circuit Inspection" procedure
NO
Check for open in signal harness
Repair as necessary and go to "Verification of Vehicle Repair" procedure.
Ignition "OFF"
Disconnect SMARTRA connector
Measure resistance between terminal 3 of the SMARTRA harness connector and terminal 61 of PCM harness connector
Specification : Approx. below 1Ω
Is the measured resistance within specifications ?
YES
Go to "Check for open in harness between PCM and Chassis ground" as below
NO
Check for open in ground harness
Repair as necessary and go to "Verification of Vehicle Repair" procedure.
Ignition "OFF"
Disconnect SMARTRA connector
Measure resistance between terminal 61 of PCM harness connector and chassis ground(G16)
Specification : Approx. below 1Ω
Is the measured resistance within specifications ?
YES
Go to "Component Inspection" procedure.
NO
Check for open in ground harness
Make sure that Chassis ground G16 is firmly tightened properly
Repair as necessary and go to "Verification of Vehicle Repair" procedure.
